Part 2 - How to Get Started Checking Refrigerant Charge

So once again...While I will tell you that I am not a perfect a/c tech, I do stick to some basics that I feel people are forgetting or just never learned. This video is about how I think about superheat and subcooling as I am evaluating or diagnosing an a/c system.
It is not a perfect way and I do mention that I like to use a range of numbers when getting an idea of what a system is doing, but it is my way and it works fairly good. As with a lot of things I do, it could be adjusted to be better if you like.
Hopefully you get something out of this video.
00:00 Intro
02:01 Formulas
03:18 Superheat and the Evaporator
15:12 Subcooling and the Condenser

[@simstubeinfo]

very well explanation for both super heat and sub cooling.

[@wellclaped7087]

One of the most helpful CZcams channels I’ve found in my life you’re very good at explaining

[@johnjennings487]

I just can talk a lot! Thank you.

[@DiegoTorres-om1ho]

Best explanation ive had, thank you.

[@johnjennings487]

Thanks.

[@kevintran5234]

now I understand why we use superheat and subcooling to check charge. clear and simple thanks

[@johnjennings487]

Clear as mud right??

[@GeraldRogerjr]

I appreciate you 🙏, thank you very kindly. You made it very easy to understand Superheat and Subcool.

[@Charles_S.]

Very well explained 👏 Thank you!

[@johnjennings487]

Thanks.

[@simmonsjr25]

Awesome video. Very good information. 👍

[@johnjennings487]

Thanks Bigg Dogg.

[@leroyflores713]

Great Job

[@waderosteet183]

Awesome video

[@hurcklynbrown2630]

I love your contents

[@johnjennings487]

Thank you. I appreciate it

[@joehead1294]

I wonder if it would be worthwhile to teach a class just about multimeter fundamentals? You could include it in with basic electrical. Some folks don't take the time to learn what they have and how to use it. Without it, well your just guessing! Ode to Mikey Pipes...

[@johnjennings487]

Anything with electrical teaching/training is pretty worthwhile in my opinion. It can only help.

[@marconantel7735]

I’ve seen some manufacturers post varying SC recommendations based on outdoor temp, and others just call out a fixed number…why?

[@johnjennings487]

Wish I had a solid answer besides "that's the way they made it" but I don't. That's why is is good to have a baseline to start from when diagnosing and not get fixed on one number. They all can come up with their own info to publish.

[@marconantel7735]

@@johnjennings487 I appreciate the response my friend! I was thinking it was efficiencies ratings. It seems like as the outdoor temperature goes up, the recommended SC goes down, perhaps to allow more use of the condenser coil in higher temps. My hypothesis anyway

[@robertsneed7689]

Nice break down John thanks for sharing. Look forward to seeing more of your territorials.#PEACE ✌🏾

[@jimmylanders2175]

John love your teaching and hope you don’t quit. You have a true gift. Thank you.

[@johnjennings487]

Thanks.